@article{33658, keywords = {Pulsed laser deposition, Titanium dioxide, Ferromagnetism, Ferromagnetic materials, Electric insulators, Strontium compounds, Magnetization, Magnetic moments, Heterojunctions, Lead compounds, Coercive force, Cobalt, Electric field effects, Manganites, Hall effect, Anomalous Hall effect (AHE), Diluted magnetic semiconductors (DMS), Magnetic insulators, Photolithography, Polarons}, author = {T Zhao and S.R Shinde and S.B Ogale and H Zheng and T Venkatesan and Ramamoorthy Ramesh and S.D Sarma}, title = {Electric field effect in diluted magnetic insulator anatase Co: TiO 2}, abstract = {An external electric field induced reversible modulation of a room temperature magnetic moment and coercive field is achieved in an epitaxial and insulating thin film of dilutely cobalt-doped anatase TiO 2. This first demonstration of an electric field effect in any oxide-based diluted ferromagnet is realized in a high quality epitaxial heterostructure of PbZr 0.2Ti 0.8O 3/Co: TiO 2/SrRuO 3 grown on (001) LaAlO 3. The observed effect, which is about 15% in strength in a given heterostructure, can be modulated over several cycles. Possible mechanisms for electric field induced modulation of insulating ferromagnetism are discussed. © 2005 The American Physical Society.}, year = {2005}, journal = {Physical Review Letters}, volume = {94}, number = {12}, issn = {00319007}, doi = {10.1103/PhysRevLett.94.126601}, note = {cited By 93}, language = {eng}, }